The recommended power-on sequence is to apply VCC first, followed by VLOGIC, and then enable the display by setting the EN pin high.
After power-on, send the display a series of initialization commands, including setting the function set, display control, and entry mode, as specified in the datasheet.
The maximum frequency for the clock signal is 4 MHz.
Yes, you can use a level shifter to convert the 3.3V logic to 5V logic, but ensure that the level shifter is capable of handling the high-speed signals and does not introduce significant propagation delays.
During data writes, poll the busy flag (BF) to ensure that the display is not busy processing previous commands. Wait until the busy flag is cleared before sending the next command or data.
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NHD-1.5-128128UGC3 Overview
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